Title:
Punching Capacity of Deck Slabs in Girder-Slab Bridges
Author(s):
Abul K. Azad, Mohammed H. Baluch, Mohammad S. A. Abbasi, and Kaiser Kareem
Publication:
Structural Journal
Volume:
91
Issue:
6
Appears on pages(s):
656-662
Keywords:
bridges (structures); failure (punching shear); slabs; tests; reinforced concrete; reinforcing steels; Structural Research
DOI:
10.14359/1490
Date:
11/1/1994
Abstract:
Static tests were conducted on a series of simulated deck panels of girder-slab bridges to determine the punching resistance of the reinforced slabs, with the aim to generate reliable test data from representative large-size models. Variables included in this test were the different load areas and the amount of the reinforcement in the slab. A comparative study of the relative accuracy of three analytical methods for computation of punching resistance of slabs under a patch load has been presented by comparing results with the experimental values. Based on the observed failure modes, a modification to the often-used ACI formula for two-way shear resistance has been proposed. (ACI)